These are cards to review topics on congruent triangles by playing quiz quiz trade. This is great because 100% of your kids are engaged reviewing the topics for the test. You will see awesome results and the kids will have a blast especially if you play music in between. I do have to say that the copy of the cards are not the best but will work perfect when you print them on colored card stock and laminate them. I'm working on a better copy and will send them out when I get them made.